package com.ali8ba.security.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import name.jiaosha.air.AppConstants;

public class CodeFilter implements Filter {

	@Override
	public void destroy() {
		
  
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain filterChain) throws IOException, ServletException {

		HttpServletRequest httpRequest = (HttpServletRequest) request;

		String code = request.getParameter("j_code");

		String sessionCode = (String) httpRequest.getSession().getAttribute(
				AppConstants.SESSION_ID);

		if (sessionCode==null ||!code.equals(sessionCode)) {

			((HttpServletResponse) response).sendRedirect(httpRequest
					.getContextPath()
					+ "/index.jsp?error=5");
		} else {

			filterChain.doFilter(request, response);
		}

	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
	

	}

}
